Wood, including timber in buildings, can be a food source for many insect species. Part 1 of this Guide contains advice on inspecting timber for wood-boring insects, and identifying different types of attack. Part 2 contains advice on treating the different types of insect attack. It should be read in conjunction with Good Repair Guide 12 on wood rot. Good Repair Guide 13: Part 1 and Part 2 - 10 pages in all.